[Hiring] Senior Mobile Developer @3Pillar

Role Description

Elevate your expertise to new heights at 3Pillar, the premier destination for trailblazing senior software engineers. Your role extends beyond the realm of code composition; you will architect transformative solutions that reshape entire industries.

You will be focused on the development and optimization of mobile applications, orchestrating an AI-accelerated development process. The project's first phase centers on enhancing a dedicated Android-only application, followed by a second phase delivering an application targeting both Android and iOS platforms. Your role is critical in bridging web technologies (Ionic/Capacitor) with complex native device hardware, specifically deep Bluetooth Low Energy (BLE) integrations, fully supported and accelerated by AI tools.

Key Responsibilities

• Facilitate effective communication with client project stakeholders regarding project status and recommendations.
• Act as a force multiplier by orchestrating AI coding tools to rapidly scaffold Capacitor plugin interfaces, boilerplate UI, and test suites.
• Review and correct AI-generated code across a multi-language stack (TypeScript, Kotlin, Swift), quickly identifying and rectifying AI hallucinations or deprecated API usage, especially regarding hardware permissions and native interactions.
• Architect and build the native bridge allowing the JavaScript WebView to communicate with native hardware seamlessly, handling asynchronous high-frequency data streams (like BLE payloads) without bottlenecking the UI thread.
• Lead the Phase 1 Android implementation by developing robust background services, managing complex BLE connections (GAP, GATT, MTU negotiations), and ensuring battery-optimized hardware communication.
• Design TypeScript Capacitor interfaces with cross-platform foresight, ensuring the Android API design can be smoothly replicated in Swift/CoreBluetooth during the Phase 2 iOS expansion.
• Collaborate with cross-functional teams to deliver a world-class mobile experience.
• Stay up-to-date with the latest trends in React Native, TypeScript, Expo, and mobile development.

Qualifications

• Strong Web-to-Native framework experience (Ionic, Capacitor, or similar) – minimum 5 years.
• Deep Native Android experience (Kotlin/Java) – minimum 3+ years, specifically with background services, thread management, and modern Android permission models (Android 12+).
• Advanced Native BLE (Bluetooth Low Energy) expertise – profound understanding of GATT/GAP, connection stability, auto-reconnections, and MTU size negotiations on native Android.
• AI-Augmented Development proficiency – hands-on experience driving AI code assistants (Cursor, GitHub Copilot, Claude) and engineering context for multi-language stacks.
• Custom Plugin Development – proven ability to write custom native code and expose it to the JavaScript layer via modern plugin APIs (Capacitor preferred).
• Solid understanding of mobile app performance optimization techniques.
• Exceptional problem-solving skills with a focus on debugging complex web-to-native hardware bridges and delivering clean, maintainable code.
• Strong communication skills and ability to work collaboratively in a team environment.
• English proficiency.

Desired

• Familiarity with iOS native development (Swift, CoreBluetooth) to ensure smooth cross-platform architectural design for future phases.
• Strong understanding of local databases (e.g., SQLite, Realm) and offline-first mobile app strategies.